Shoe sewing machine



B. T. LEV'EQUE 12,098,251

SHOE SEWING MACHINE.

Nov. 9, 1937,

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SHOE SEWING MACHINE Original Filed March 12, 1935 19 Sheets-Sheet l9 ilfgz W 57W/M (Ittomegs 3 ZSnnentor Patented Nov. 9, 1937 PATENT QFFlCE SHOE SEWING MACHINE Bernard T. Leveqne, Wenham, Mass, assignor to United Shoe Machinery Corporation, Paterson, N. J., a corporation of New Jersey Original application March 12, 1935, Serial No.

10,621. Divided and this application May 12,

1936, Serial No. 79,281

13 Claims.

' The present invention relates primarily to shoe sewing machines, and is herein disclosed as em-f bodied in a curved hook needle lockstitch machine adapted'to sew the outsole to the Welt and. upper of a welted shoe, the illustrative embodi-' ment of the invention being of the same construc tion and operation as that of the machine described in applicants pending application Serial No. 10,621, filed March 12, 1935, of which the present application is a division.

The objects of the invention are to provide in an outsole stitching machine constructions and arrangements of parts capable of high speed operation which will be strong and durable and which can be brought to rest in the desired position quickly and accurately without injurious shock or jar.

With the above objects in view, a feature of the present invention contemplates the provision in an outsole sewing machine of separate trains of mechanism between the cam shaft for the machine and the principal thread manipulating and necting the cam shaft from its driving means,

and treadle operated connections are also provided for disconnecting the elements above referred to so that the thread manipulating and work feeding devices may be brought to rest independently of the rotation of the shaft. In the machine hereinafter specifically described, this feature of the invention is embodied in an element which may be termed a controller which is actuated upon stopping the machine to move the movable elements of the actuating trains of mechanism so as to disconnect the thread manipulating and Work feeding devices from the cam shaft and, upon starting the machine, is actuated to reconnect said devices and the cam shaft. To actuate the controller to cause the thread manipulating and work feeding devices to be disconnected when the various devices are in the desired stopping position, and also to enable these devices to be reconnected at the proper point in the rotation of the cam shaft when the machine is again started into operation, timing cams on the cam shaft are provided and suitable connections whereby these cams are controlled from the starting and. stopping treadle.

Although the devices, combinations and arrangementsof parts above referred to relating to the means for disconnecting certain of the operating parts from the cam shaftupon stopping the machine are particularly adapted for use in outsole shoe sewing machines, they are capable of use in other types of machines and, accordingly, the several features of the invention'are not to be considered as limited to any particular application except as specifically defined in the claims. Certain features of the present invention also consist in novel and improved devices, combinations and arrangements of parts hereinafter described and claimed, the advantages of which will be obvious to those skilled in the art from the following description.

An outsole shoe sewing machine embodying the several features of the present invention is illus-, trated in the accompanying drawings, in which;

Figure 1 is a View in right hand side elevation of the complete machine with the operating parts and supporting brackets removed from the head of the machine; Figure 2 is a view in side elevation of the head of the machine illustrating particularly the parts which have been omitted from Figure 1; Figure 3 is a detail sectional view of the rotary loop taker which is in the form of a shuttle,

together with the thread case and bobbin for the locking thread supported therein; Figure 4 is a view in rear elevation of the head ofthe machine illustrated in Figure 2; Figure 5 is a view in front elevation of the head of the machine illustrated in Figure 2, on a somewhat larger scale; Figure 6 is a detail plan view partly in section of a portion of the head of the machine with the upper portion of the frame and certain of the operating parts removed; Figure 7 is a detail view in' side elevation, partly in section, illustrating the work feeding mechanism; Figure 8 is a detail View, in front elevation, partly in section, illustrating the'work feeding mechanism and the take-up mechanism for the needle thread; Figure 9 is a detail View illustrating the connection betweenthe feeding mechanism and locking thread pull-off or measuring mechanism; Figure 10 is a detail view illustrating the locking thread pulloff or measuring mechanism on an enlarged scale; Figure 11 is a detail view in side elevation of the sewing devices adjacent the'sewing point; Figure 12 is a detail sectional view of the mechanism illustrated in Figure 11; Figure 13 is a detail View in front elevation of the thread finger and looper; Figure 14 is a plan view of the mechanism illustrated in Figure 13, together with the actuating lever for the looper; Figure 15 is a detail sectional 

